The IBEX calibration data set is broken up by sensor: Hi and Lo. Links to the calibration data and explanatory text are given below.

Hi Sensor Calibration Data

Calibration data for the IBEX Hi Sensor is kept here. 
Documentation for the files in that directory can be found here.

Lo Sensor Calibration Data

Calibration data for the IBEX Lo Sensor is kept here. 
Documentation for the files in that directory can be found here.